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  wbrdrh                                                                WNDWC
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  Function       Places a horizontal partition of the same type as the window
                 border from edge to edge of the border.
  Syntax         void wbrdrh( unsigned char row );
  Remarks        This routine divides a window using wsbrdr and brdrattr from
                 the top window record.  It provides a horizontal line
                 complete with a tee on each end using parts BRDR_HL,
                 BRDR_LT, and BRDR_RT.  If brdrattr is set to SAMEATTR, then
                 the attributes will remain the same on the screen.  If there
                 is no border, the function does nothing.
  Return value   None.
  Screens        All video pages and virtual screens.
  EOS            Unaltered.
  Restrictions   Stay within window limits.  Cannot use NO_BORDER.